Spectral Signatures of PhotonParticle Oscillations from Celestial Objects
Abstract
We give detailed predictions for the spectral signatures arising from photonparticle oscillations in astrophysical objects. The calculations include quantum electrodynamic effects and effects due to active relativistic plasma. We show that, by studying the spectra of compact sources, it may be possible to directly detect (pseudo)scalar particles, such as the axion, with much greater sensitivity, by up to three orders of magnitude, than is currently achievable by other methods. In particular, if such particles exist with masses m_{a} < 10^{2} eV and coupling constant to the electromagnetic field, g > 10^{13} GeV^{1}, then their oscillation signatures are likely to be lurking in the spectra of magnetars, pulsars, and quasars.
 Publication:

The Astrophysical Journal Supplement Series
 Pub Date:
 January 2009
 DOI:
 10.1088/00670049/180/1/1
 arXiv:
 arXiv:0806.0411
 Bibcode:
 2009ApJS..180....1C
 Keywords:

 dark matter;
 elementary particles;
 magnetic fields;
 plasmas;
 pulsars: general;
 quasars: general;
 Astrophysics;
 High Energy Physics  Experiment;
 High Energy Physics  Phenomenology;
 High Energy Physics  Theory
 EPrint:
 29 pages (reduced resolution for figs. 3, 4b, 7)